I think 50% hits on game is pretty good shooting. Fire both barrels and have one bird down, not too shabby over the long run and definitely not a gamble, just hunting and way better than I can honestly do.

I also think historic books are indispensable, but I think many of those authors would be amazed at modern shot, wads and powders. Decoys out at thirty-five yards means a bunch are going to swing past on the far side that are plenty fair game to take a shot at.